On Tuesday PC Sebastian Ellis from Kingston Borough said police were "very thankful" for Lawson's actions and urged him to come forward as the Borough Commander was "very impressed" and wanted to meet him.

Scotland Yard said officers were patrolling near Clarence Street, Kingston, around 11.20pm on Saturday when they received a report that two males were selling drugs nearby.

The spokesperson said the males left before police arrived, but one of them was stopped near to the scene. He then attempted to flee the scene, before he was arrested.